Nortel Networks 1000BASE-ZX Manual Do Utilizador

Appendix D Connectors and pin assignments

Using the BayStack 420 10/100/1000 Switch

BayStack 420 Switch switches use MDI-X ports that allow you to connect directly 
to end stations without using crossover cables (

).

Figure 85   MDI-X to MDI cable connections

If you are connecting the BayStack 420 Switch to a device that also implements 
MDI-X ports, use a crossover cable (

).

1

8

1

8

8

1

8

1

RX+

RX-

TX+

TX-

TX+

TX-

RX+

RX-

MDI-X port

Straight-through cable

MDI port

T

R

T

R

1

2

3

4

5

6

7

8

1

2

3

4

5

6

7

8

1

2

3

4

5

6

7

8

1

2

3

4

5

6

7

8

BS45056A